B. chloroplast carrries out photo synthesis
        
                    
             
        
        
        
Teach better , make sure we have a good understanding of things
        
             
        
        
        
Answer:
The moon.
Explanation:
High tides and low tides are caused by the Moon. The Moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the Moon and the side farthest from the Moon.
 
        
                    
             
        
        
        
................................